NECTA Form 1–4 (CSEE) · Form 1 · Basic Mathematics (Form 1) · Notes · Unit 1: Real Numbers, Operations, Divisibility, Factors and Multiples

Unit 1: Real Numbers, Operations, Divisibility, Factors and Multiples

Comprehensive NECTA Form 1 Basic Mathematics revision notes covering the classification of real numbers (natural, whole, integers, rational, irrational), number line representation, absolute values, rules of directed numbers, order of operations (BODMAS), divisibility tests (2 through 11), prime and composite numbers, the Fundamental Theorem of Arithmetic and prime factorization in index notation, Greatest Common Factor (GCF/HCF), Least Common Multiple (LCM), the GCF-LCM product relationship, and real-world synchronization word problems with step-by-step NECTA practice problems and marking schemes.